Home / 30,947.69-42,707.86-16,800.55

Finding the Fourth Proportional to 30,947.69, 42,707.86 and 16,800.55

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Solution

The fourth proportional to 30,947.69, 42,707.86 and 16,800.55 is: 23,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,947.69 : 42,707.86 = 16,800.55 : x
  2. Step 2: Convert to fraction form
    30,947.69/42,707.86 = 16,800.55/x
  3. Step 3: Cross multiply
    30,947.69x = 42,707.86 × 16,800.55
  4. Step 4: Simplify right side
    30,947.69x = 717,515,388.55
  5. Step 5: Solve for x
    x = 717,515,388.55/30,947.69
  6. Step 6: Final answer
    x = 23,184.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.